ColoredImage类 参考

Class representing a bitmap image colored based on hue/sat/gamma settings. 更多...

#include <image.h>

Public 成员函数
	ColoredImage (uint width, uint height, const uchar *greyLevels, const uchar *alphaLevels, int saturation, int hue, int gamma)
	~ColoredImage ()
bool	save (const QCString &fileName)

静态 Public 成员函数
static void	hsl2rgb (double h, double s, double l, double *pRed, double *pGreen, double *pBlue)

Private 属性
uint	m_width
uint	m_height
uchar *	m_data
bool	m_hasAlpha

详细描述

Class representing a bitmap image colored based on hue/sat/gamma settings.

在文件 image.h 第 56 行定义.

构造及析构函数说明

ColoredImage()

ColoredImage::ColoredImage	(	uint	width,
		uint	height,
		const uchar *	greyLevels,
		const uchar *	alphaLevels,
		int	saturation,
		int	hue,
		int	gamma
	)

在文件 image.cpp 第 476 行定义.

{
  m_hasAlpha = alphaLevels!=0;
  m_width    = width;
  m_height   = height;
  m_data     = (uchar*)malloc(width*height*4);
  uint i;
  for (i=0;i<width*height;i++)
  {
    uchar r,g,b,a;
    double red,green,blue;
    hsl2rgb(hue/360.0,                            // hue
            saturation/255.0,                     // saturation
            pow(greyLevels[i]/255.0,gamma/100.0), // luma (gamma corrected)
            &red,&green,&blue);
    r = (int)(red  *255.0);
    g = (int)(green*255.0);
    b = (int)(blue *255.0);
    a = alphaLevels ? alphaLevels[i] : 255;
    m_data[i*4+0]=r;
    m_data[i*4+1]=g;
    m_data[i*4+2]=b;
    m_data[i*4+3]=a;
  }
}

引用了 hsl2rgb(), m_data, m_hasAlpha, m_height , 以及 m_width.

~ColoredImage()

ColoredImage::~ColoredImage

(

)

在文件 image.cpp 第 504 行定义.

{
  free(m_data);
}

引用了 m_data.

成员函数说明

hsl2rgb()

void ColoredImage::hsl2rgb ( double  h, double  s, double  l, double *  pRed, double *  pGreen, double *  pBlue  )

static

在文件 image.cpp 第 412 行定义.

{
  double v;
  double r,g,b;
 
  r = l;   // default to gray
  g = l;
  b = l;
  v = (l <= 0.5) ? (l * (1.0 + s)) : (l + s - l * s);
  if (v > 0)
  {
    double m;
    double sv;
    int sextant;
    double fract, vsf, mid1, mid2;
 
    m       = l + l - v;
    sv      = (v - m ) / v;
    h      *= 6.0;
    sextant = (int)h;
    fract   = h - sextant;
    vsf     = v * sv * fract;
    mid1    = m + vsf;
    mid2    = v - vsf;
    switch (sextant)
    {
      case 0:
        r = v;
        g = mid1;
        b = m;
        break;
      case 1:
        r = mid2;
        g = v;
        b = m;
        break;
      case 2:
        r = m;
        g = v;
        b = mid1;
        break;
      case 3:
        r = m;
        g = mid2;
        b = v;
        break;
      case 4:
        r = mid1;
        g = m;
        b = v;
        break;
      case 5:
        r = v;
        g = m;
        b = mid2;
        break;
    }
  }
  *pRed   = r;
  *pGreen = g;
  *pBlue  = b;
}

被这些函数引用 ColoredImage(), getDirectoryBackgroundColor(), Image::Image() , 以及 replaceColorMarkers().

save()

bool ColoredImage::save

(

const QCString &

fileName

)

在文件 image.cpp 第 509 行定义.

{
  uchar *buffer;
  size_t bufferSize;
  LodePNG_Encoder encoder;
  LodePNG_Encoder_init(&encoder);
  encoder.infoPng.color.colorType = m_hasAlpha ? 6 : 2; // 2=RGB 24 bit, 6=RGBA 32 bit
  encoder.infoRaw.color.colorType = 6; // 6=RGBA 32 bit
  LodePNG_encode(&encoder, &buffer, &bufferSize, m_data, m_width, m_height);
  LodePNG_saveFile(buffer, bufferSize, fileName.data());
  LodePNG_Encoder_cleanup(&encoder);
  free(buffer);
  return TRUE;
}

引用了 QCString::data(), m_data, m_hasAlpha, m_height, m_width , 以及 TRUE.

被这些函数引用 writeColoredImgData().

类成员变量说明

m_data

uchar* ColoredImage::m_data

private

在文件 image.h 第 69 行定义.

被这些函数引用 ColoredImage(), save() , 以及 ~ColoredImage().

m_hasAlpha

bool ColoredImage::m_hasAlpha

private

在文件 image.h 第 70 行定义.

被这些函数引用 ColoredImage() , 以及 save().

m_height

uint ColoredImage::m_height

private

在文件 image.h 第 68 行定义.

被这些函数引用 ColoredImage() , 以及 save().

m_width

uint ColoredImage::m_width

private

在文件 image.h 第 67 行定义.

被这些函数引用 ColoredImage() , 以及 save().

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该类的文档由以下文件生成:

• src/image.h
• src/image.cpp